Machine for spreading glue on the edges of boards



Dec. 23, 1952 .1. MABCANTEL 2,622,557

MACHINE FOR SPREADING GLUE on THE EDGES OF BOARDS Filed Oct. 21, 1948 JOEMQFQQNZEL ATZ'OFZIZZT.

Patented Dec. 23, 1952 MACHINE FOR SPREADING GLUE ON THE EDGES OF BOARDS I Joe Marcantel, Oakdale, La., assignor to Hillyer Deutsch Edwards, Inc., Oakdale, La., a corporation of Louisiana 'Application October 21, 1948, Serial No. 55,763

3 Claims. 1

The present invention relates to a device for spreading liquid, and is particularly concerned with a device of the character under consideration which is specifically intended for spreading liquid glue upon the edges of boards carried past a spreading station by conveyor means. The primary object of the invention is to provide means whereby glue or other liquid may bemore effectively spread on work carried past the station; A further object of the invention is to improve the construction and operation of a liquid spreading machine as a whole. A further object of the invention is to mount a liquid spreading wheel upon bearings spaced axially from each other'to a substantial extent, said bearings being independently spring supported, whereby the attitude, as well as the position, of the liquid spreading wheel may vary in response to variations in pressure exerted upon it peripherally. Still further objectsof the invention will appear as the description proceeds.

To the accomplishment of the above and related objects, my invention may be embodied in the form illustrated in the accompanying drawings, attention being called to the fact, however, that-the drawings are illustrative only, and that change may-be made in the-specific construction illustrated and described, so long as the scope of the appended claims is not violated.

Fig. 1 is a perspective view of a liquid spreadingmachine embodying the present invention;

Fig. 2 is a perspective view of the vat means, the spreader wheel, and the directly associated parts, upon a somewhat enlarged scale;

Fig. 3 is a fragmentary enlarged perspective view of themounting for a presser roll;

Fig. 4-is a fragmentary plan view of a kicker assembly, forming a part of themachine; and

Fig.5 is an enlarged end elevation of a detail of the axle support.

Referring more particularly to the drawings, it willbe seen that I have illustrated a vat means indicated generally by the reference numeral It andcomprising an outer container I l in which is received a receptacle I2 for a liquidto be spread. The invention is particularly adapted to the spreading of glue, and has been so illustrated and will be so described, although it will be apparent that the invention is also applicable to the spreading of anyother reasonably viscid liquid.

In the illustrated embodiment of the invention, the receptacle l2, partially filled with glue or other liquid, is supported in the container ll upon hangers I3 and [4, the Walls of the receptacle being substantially spaced from the walls of the container, whereby any liquid which is splashed from the receptacle willbe retained in the container. Two blocks l5 and. I6 are removably; secured, by any suitable fastening means,

to. the outer surfaces of, theopposedwalls l1 and.

I8 of the container ll. Said blocks l5 and It are identical, and therefore only one will be described in detail. Each block is formed with a trackway [9 which, in the illustrated embodiment of the invention, is rectilinear and vertically arranged. In the illustrated embodiment of the invention, the trackway comprises facing dovetailed grooves 20 and 21 formed in the spaced parallel, vertically arranged walls of the block I 5. The block l5 extends above and below the upper edge of the wall I l of the container I l with which it is associated.

An axle 22 supports the spreader wheel 23 and has a substantial axial extent in opposite directions from said wheel. At points oppositely spaced axially from the Wheel, the bearing elements 24 and 25 engage the shaft 22 to support the same; and said bearing elements are reciprocably mounted in the trackways of the respective blocks l5 and It. A coiled spring 26 is confined between the bottom of the trackway l9 and the bearing 2i, resiliently supporting said bearing element. The bearing 25 is similarly supported in block it upon a spring similar to the spring 26; and it will be obvious that the two bearings 2t and 25 are independently reciprocable in the trackways of the blocks I5 and I6, the engagement of the bearings in the dovetailed grooves of the block trackways being sufiiciently loose to permit tilting of the axle 22 out of the horizontal, thereby changing the attitude of the wheel 23, as well as its position.

A bracket 21 is secured to the bearing element 25 by a screw 28 or the like; and, near its opposite end, said bracket is provided with an elongated slot 29 in which engages a clamping screw 30 for securing to said bracket a doctor 3! which adjustably straddles the wheel 23 to scrape liquid from its axial ends and to limit the depth of the film of liquid on the periphery of said wheel.

A work support comprising separate elements 32 and 33, terminating adjacent the portion of the periphery of the wheel 23 which projects above the walls of the vat means H3, is disposed in a plane parallel with, but spaced below, the horizontal plane tangent to the uppermost portion of the periphery of the Wheel. The springs 25 normally support the bearing elements Hand 25 in such positions that the axle 22 is horizontal and the uppermost portion of the periphery of the wheel 23 is located substantially above the plane of the work support. Adjacent the wheel 23, and upon spaced vertical axes, are mounted two sprockets 3t and 35 about which is trained a chain conveyor 38. A channel mount 37 is secured adjacent that run of the conveyor 36 which passes the wheel, and provides mountings for a plurality of pivots 38 with each of which is associated a presser roller 39; The precise construction of the. presser. rollers. is. best illus- 3 trated in Fig. 3, in which it will be seen that a barrel 40 is mounted to oscillate about the axis of each pivot 38, said barrel carrying a finger 4| on the outer end of which is hung a journal member 42 supporting the roller 39. An ear 43 on the barrel 4!] provides a stud 44 over which is sleeved one end of a coiled spring 45, the opposite end of which is sleeved upon a projecting end of a screw 45, and bears against an abutment 41 carried by said screw. Each screw 46 threadedly penetrates a tapped opening 43 in the channel 31, whereby adjustment of the screw 46 will adjust the degree of compression of the associated spring 45. The rollers 39 are thus resiliently urged toward the adjacent run of the conveyor chain 36.

Work will be fed to the machine at the righthand end of Fig. 1, being inserted between the conveyor and the first presser roller 38; and will be carried along between the conveyor and said presser roller, while supported upon the work support 32. The illustrated arrangement is particularly adapted to the application of glue to an edge of relatively narrow boards. As each board is carried past the wheel 23, its lowermost edge will contact the periphery of said wheel at a level below the horizontal plane tangent to the wheel periphery. The board being gripped between the conveyor and the presser rollers 39, a downward pressure will be exerted upon the wheel 23 as the board moves forwardly. Since the wheel is supported upon the axle 22 whose opposite ends are independently carried by the spring-supported bearing elements 25 and 25, the wheel, axle and bearings will thereby be depressed, against the tendency of said springs.

Now, if the wheel-engaging edge of the board is longitudinally wavy, it will be seen that the springs 25 will cause and permit the wheel to move upwardly and downwardly to follow the waves in the edge of the board. If the wheelengaging edge of the board is not square with the board surfaces engaging the conveyor and the presser rollers, the independent movability of the bearings elements 24 and 25 will permit the wheel to change its attitude to maintain contact throughout the width of the board edge, whereby glue will be spread evenly over the edge of the board in spite of imperfections in said edge.

Adjacent the sprocket 35, a bracket 49 projects from the frame element 50 to provide a :pivot point upon which is pivotally mounted a lever 52 carrying, at its outer end, a shoe 53 which will engage work emerging from the last presser roller 39. A spring 54 has one end connected to the opposite arm of lever 52 and its other end anchored at 55 on the frame element 50, the effect of said spring being to urge the shoe 53 to a position laterally beyond the plane of the adjacent run of the conveyor 35. Thus, as a piece of work emerges into contact with the shoe 53, it will swing the lever 52 in a clockwise direction against the tendency of the spring 54. As soon as the trailing end of the work piece leaves the last presser roller 39, the spring 54 will swing the lever 52 in a counter-clockwise direction to tilt that work piece, throwing it off its edge and onto one face. A strap 56, carried by the frame element 58, is formed to provide a stop shoulder 51 against which the lever 52 is normally held by the spring 54.

Preferably the axle 22 will carry a pulley 58 whereby said axle may be driven, through a belt 59, from any suitable power source.

I claim as my invention:

1. In a liquid-spreading machine, vat means including a receptacle for liquid, a wheel, an axle for said wheel, two bearing elements respectively associated with said axle at points oppositely axially spaced from said wheel, a guideway for each of said bearing elements, comprising a block providing a trackway slidably receiving its associated bearing element, said blocks being removably secured to the outer surfaces of opposed walls of said vat means and projecting above said walls, and spring means confined between the bottom of each trackway and its associated bearing element, said spring means normally supporting said axle in horizontal position above said walls with a portion of the periphery of said wheel disposed within said receptacle below the normal level of liquid in said receptacle.

2. In a liquid-spreading machine, vat means including a receptacle for liquid, a wheel, an axle for said wheel, two bearing elements respectively engaging said axle at points oppositely axially spaced from said wheel, a guideway for each of said bearing elements, said guideways projecting above opposed walls of said vat means and each providing a substantially vertically-extending track engaging its associated bearing element to guide reciprocatory movement of such bearing element, spring means for each of said bearing elements normally supporting said axle in horizontal position above said walls with a portion of the periphery of said wheel disposed within said receptacle below the normal level of liquid in said receptacle, a doctor straddling said wheel in a region above the level of liquid in said vat means, and means movable with one of said bearing elements and supporting said doctor.

3. In a liquid spreading machine, vat means including a receptacle for liquid, a wheel, an axle for said wheel, two bearing elements respectively engaging said axle at points oppositely axially spaced from said wheel, a guideway for each of said bearing elements, said guideways projecting above opposed walls of said vat means and each providing a substantially vertically-extending track engaging its associated bearing element to guide reciprocatory movement of such bearing element, sprin means for each of said bearing elements normally supporting said axle in horizontal position above said walls with a portion of the periphery of said wheel disposed within said receptacle below the normal level of liquid in said receptacle, each of said bearing elements being rockable, relative to its track, about a horizontal axis perpendicular to said axle, a work support adjacent said wheel and located in a plane substantially parallel with, but below, the horizontal tangent to the uppermost portion of the periphery of said wheel, and means for moving a work piece past said wheel in contact with the periphery thereof while holding the same substantially in the plane of said work support,

JOE MARCANTEL.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 398,135 Dreyfuss Feb. 19, 1899 778,049 Ladewig Dec. 20, 1904 1,147,161 Goldsmith July 20, 1915 1,392,117 Clark Sept. 27, 1921 2,075,620 Mackenzie Mar. 30, 1937 

